The best argument I have come up with so far for using softball first is similar to what you are alluding here...
Leave your partner with the best impression possible of you before you go to protection phase...
Exit emotional connection emanating warmth and respect.
You need softball for this... but I don't advocate it for more than a month or so...
More than three months of softball and most people are ready to slit their wrists...
In THIS manner, softball is a useful tactic, but I don't have confidence that it will do much damage to the affair itself... never seen that happen yet
Phil McGraw was more than willing to talk relationship talk with this woman who he caught lying to him more than once. He hit her hard and fast with everything he had... and i do believe he made some impact.
If he tried that alone with her I honestly don't think it would have worked.. having her husband and daughters there made a huge diff I think...